| 摘要 |
The monitor includes an unit (11) for a regulation of an operating point of a cathode ray tube (1), whose tube floor (6) is equipped with a luminescent layer (5), and comprises a visible area (19) for the display of information, and a invisible area (15). A test signal is displayed for the regulation of the operating point. Devices (16, 17, 18) are provided, which record a brightness value in at least one part of the invisible area during the display of the test signal, and convert the recorded brightness value into a control parameter supplied to the regulation unit for the regulation of the operating point. The devices comprise preferably a light collector arranged on the tube floor and a sensor, arranged in an area covered by a monitor frame (14), and a brightness conversion unit (16) for the conversion of the brightness value.
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| 申请人 |
SIEMENS AG, 80333 MUENCHEN, DE |
发明人 |
BURKHARDT, KLAUS, DIPL.-ING. (FH), 76703 KRAICHTAL, DE;EHRMANN, BERND, 76228 KARLSRUHE, DE;KUPPER, WALTER, DIPL.-ING. (FH), 76744 WOERTH, DE;PRANG, HANS-JOACHIM, DIPL.-ING., 76863 HERXHEIM, DE;ECKHARDT, WOLFGANG, 76229 KARLSRUHE, DE;HENLE, MANFRED, DIPL.-ING. (FH), 76351 LINKENHEIM-HOCHSTETTEN, DE;NAGEL, UWE, DIPL.-ING. (FH), 76189 KARLSRUHE, DE;SCHAEFER, ERICH, DIPL.-ING. (FH), 76187 KARLSRUHE, DE |
